Dragonfly GPS not working while TCP connection is enabled?

[Amod Amatya]

I am using MTS Dragonfly to send GPS data using MQTT. But GPS cannot be enabled when TCP socket is open. I need to disconnect from the TCP connection to get GPS data. Whenever I try to enable GPS when TCP connection is already established, I get the error:

socket is open. Can not send AT commands

Is it possible in Dragonfly to run TCP and GPS simultaneously?

[Mike Fiore]

Amod,

The current MTSAS implementation doesn’t allow this because of the way it handle sockets. Our new implementation (supporting mbed-os) handles sockets in a cleaner way and will allow concurrent open sockets and GPS queries.

Cheers,
Mike

[Amod Amatya]

Mike,

I am using MQTT protocol to publish GPS co-ordinates to Azure Iot Hub every 2 mi nutes. Using MQTT, TCP connection is continuously established. So, I am not able to enable GPS.
So, I am currently stuck here. Any suggestions what can I possibly do to publish GPS coordinates using MQTT?

[Amod Amatya]

Hi Mike,

Have you already released the new implementation?

[Mike Fiore]

Amod,

We are finishing up development and testing on the new implementation. It will be publicly available soon.

Cheers,
Mike

[Adriaan Kooderings]

Hi Mike,

I’m using the MTSCellularInterface with mbed-os so this problem should be gone? Right?

many thanks Adriaan.

[Leon Lindenfelser]

Hi Adriaan,

Yes, you can have simultaneous TCP socket and GPS.
The MTSCellularInterface code can be found here:
https://github.com/MultiTechSystems/MTSCellularInterface
It implements sockets in command mode allowing GPS while TCP sockets are established. You can find a couple examples of MTSCellularInterface in use here:
https://os.mbed.com/teams/MultiTech/code/Dragonfly-Examples/wiki/Homepage

Kind regards,
Leon

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